Safety rail system and method for using same

ABSTRACT

Embodiments of the disclosure provide a safety rail. The safety rail may include a body disposed on first and second adjustable boots. The first and second adjustable boots may be adapted to secure the safety rail to an excavation support structure. The body may include a lower rail connected to the first and second adjustable boots.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.14/480,594, filed on Sep. 8, 2014, which claims priority to U.S. patentapplication Ser. No. 13/012,895, filed on Jan. 25, 2011, now issued U.S.Pat. No. 8,827,037, which are both incorporated by reference herein.

BACKGROUND Field

Embodiments of the present disclosure generally relate to fallprevention, and more particularly, to construction site fall protection.

Description of the Related Art

In the United States, falls make up over one-third of all constructionfatalities. Over 250,000 non-fatal injuries from falls occurred in 2007alone. The Code of Federal Regulations (CFR) specifies that an employermust utilize a fall protection system whenever an employee may fall sixfeet or more from any surface. Additionally, at an edge of anexcavation, well, pit, shaft, hole, etc., that is six feet or more indepth and is not readily visible, employees must be protected from fallsby guardrail systems, fences, barricades, or covers as appropriate.

Often conventional guardrail systems, fences, and barricades areunwieldy and difficult to install and disassemble. Some conventionalguardrail systems, fences, and barricades can only be used with specificconstruction equipment with fixed sizes or connections. Other guardrailsystems, fences, or barricades previously used do not comply withheightened federal safety standards.

There is a need, therefore, for a safety rail system that meets currentsafety standards, is easily moveable, and is easily attachable tovarious construction site fixtures or structures.

SUMMARY

Embodiments of the disclosure provide a safety rail. The safety rail mayinclude a body disposed on first and second adjustable boots. The firstand second adjustable boots may be adapted to secure the safety rail toan excavation support structure. The body may include a lower railconnected to the first and second adjustable boots.

Embodiments of the disclosure may further provide a safety rail for anexcavated area. The safety rail may include a body having an upper railand a lower rail. The upper and lower rails may be connected to a firstadjustable boot via a first base leg. The first adjustable boot may beadapted to secure the safety rail to an excavation support structure.

Embodiments of the disclosure may further provide a method forprotecting an excavation area. The method may include disposing a firstadjustable boot and a second adjustable boot of a first safety rail ontoan excavation support structure. The first safety rail may include abody having a lower rail connected to the first and second adjustableboots. The method may also include securing the first and secondadjustable boots to the excavation support structure.

BRIEF DESCRIPTION OF THE DRAWINGS

The present disclosure is best understood from the following detaileddescription when read with the accompanying Figures. It is emphasizedthat, in accordance with the standard practice in the industry, variousfeatures are not drawn to scale. In fact, the dimensions of the variousfeatures may be arbitrarily increased or reduced for clarity ofdiscussion.

FIG. 1 depicts an elevation view of an illustrative safety rail,according to one or more embodiments described.

FIG. 2 depicts an isometric view of an illustrative boot for a safetyrail, according to one or more embodiments described.

FIG. 3 depicts a partial elevation view of a connection between twosafety rails, according to one or more embodiments described.

DETAILED DESCRIPTION

It is to be understood that the following disclosure describes severalexemplary embodiments for implementing different features, structures,or functions of the invention. Exemplary embodiments of components,arrangements, and configurations are described below to simplify thepresent disclosure; however, these exemplary embodiments are providedmerely as examples and are not intended to limit the scope of theinvention. Additionally, the present disclosure may repeat referencenumerals and/or letters in the various exemplary embodiments and acrossthe Figures provided herein. This repetition is for the purpose ofsimplicity and clarity and does not in itself dictate a relationshipbetween the various exemplary embodiments and/or configurationsdiscussed in the Figures. Moreover, the formation of a first featureover or on a second feature in the description that follows may includeembodiments in which the first and second features are formed in directcontact, and may also include embodiments in which additional featuresmay be formed interposing the first and second features, such that thefirst and second features may not be in direct contact. Finally, theexemplary embodiments presented below may be combined in any combinationof ways, i.e., any element from one exemplary embodiment may be used inany other exemplary embodiment, without departing from the scope of thedisclosure.

Additionally, certain terms are used throughout the followingdescription and claims to refer to particular components. As one skilledin the art will appreciate, various entities may refer to the samecomponent by different names, and as such, the naming convention for theelements described herein is not intended to limit the scope of theinvention, unless otherwise specifically defined herein. Further, thenaming convention used herein is not intended to distinguish betweencomponents that differ in name but not function. Additionally, in thefollowing discussion and in the claims, the terms “including” and“comprising” are used in an open-ended fashion, and thus should beinterpreted to mean “including, but not limited to.” All numericalvalues in this disclosure may be exact or approximate values unlessotherwise specifically stated. Accordingly, various embodiments of thedisclosure may deviate from the numbers, values, and ranges disclosedherein without departing from the intended scope. Furthermore, as it isused in the claims or specification, the term “or” is intended toencompass both exclusive and inclusive cases, i.e., “A or B” is intendedto be synonymous with “at least one of A and B,” unless otherwiseexpressly specified herein.

The terms “up” and “down”; “upward” and “downward”; “upper” and “lower”;“upwardly” and “downwardly”; “above” and “below”; and other like termsas used herein refer to relative positions to one another and are notintended to denote a particular spatial orientation since the apparatusand methods of using the same may be equally effective at various anglesor orientations.

FIG. 1 depicts a side view of an illustrative safety rail 100, accordingto one or more embodiments. The safety rail or handrail 100 generallyincludes a body 140. The body 140 may include a first or “upper” rail107 and/or a second or “lower” rail 105. The upper rail 105 and/or thelower rail 107 may be connected to a first boot 171 and/or a second boot173. For example, the rails 105, 107 may be connected to the first andsecond boots 171, 173 via a first base leg 101 and a second base leg103, respectively. Although not shown, in another example, the lowerrail 105 may be directly connected to the first and second boots 171,173.

The boots 171, 173 are generally adapted to secure the safety rail 100to a rigid or structurally supportive base at a construction site,excavation site, work zone, or the like. Exemplary base structuresinclude excavation support structures (e.g., trench shoring walls,trench shield walls, aluminum trench box walls, shoring panels, sliderail panels, combinations of the same, or the like), beams, scaffolds,slabs, or the like. For example, the boots 171, 173 may clamp onto thetop edge of a wall 150 such as a trench box wall or shoring panel.Although not shown, the boots 171, 173 may be oriented at 90 degreeswith respect to the base legs 101, 103 to allow connection of the safetyrail 100 to substantially horizontal surfaces, such as a slab edge. Theboots 171, 173 may be adjustable to a plurality of angles to allowattachment to surfaces having corresponding angles.

The base legs 101, 103 may be positioned between ends of the upper rail107 and/or ends of the lower rail 105. The lower rail 105 may bedisposed on or otherwise attached to the first base leg 101 and thesecond base leg 103. For example, the lower rail 105 may be welded,pinned, riveted, bolted, or otherwise secured between the first andsecond base legs 101, 103. In another example, the lower rail 105 mayextend beyond the base legs 101, 103 at either end. Although shown as asingle piece, the lower rail 105 may be formed of several pieces securedbetween the base legs 101, 103 and on either side of the base legs 101,103. The upper rail 107 is generally disposed on or otherwise attachedto upper ends of the first and second base legs 101, 103. For example,the upper rail 107 may be welded, pinned, riveted, bolted, or otherwisesecured to the top of the first and second base legs 101, 103.

A first post 109 and a second post 111 may be disposed proximate eitherend of the upper rail 107 and/or either end of the lower rail 105,outside of the base legs 101, 103. For example, the first post 109 maybe dispose between the upper and lower rails 107, 105 at first endsthereof, and the second post 111 may be disposed between the between theupper and lower rails 107, 105 at second ends thereof. In anotherexample, the first post 109 may be disposed between the first base leg101 and an end of either of the upper or lower rails 107, 105, and thesecond post 111 may be disposed between the second base leg 103 and anend of either of the upper or lower rails 107, 105. One end of each ofthe posts 109, 111 is generally attached to an end of the upper rail107, but may be attached somewhere in between. Another end of each ofthe posts 109, 111 may be attached to an end of the lower rail 105and/or to one of the base legs 101, 103. For example, the posts 109, 111may be welded, pinned, riveted, bolted, or otherwise secured to opposingends of the lower and upper rails 105, 107. Although not shown, one ormore additional posts may be added to the body 140 to provide increasedstrength. Although shown as separate pieces, any two or more of therails 105, 107 and the posts 109, 111 may be formed out of one piece,e.g., out of a single shaped pipe.

The rails 105, 107, the posts 109, 111, and the base legs 101, 103 maybe solid and/or hollow. In at least one embodiment, the rails 105, 107,the posts 109, 111, and the base legs 101, 103 may all be pipe, tubularsteel, or a combination thereof. For example, the rails 105, 107 and theposts 109, 111 may be round steel pipes and the base legs 101, 103 maybe substantially square tubular steel.

The rails 105, 107, the posts 109, 111, and the base legs 101, 103 mayhave the same cross-sectional shape, or they may have a differentcross-sectional shape, as desired. Exemplary cross-sectional shapesinclude, but are not limited to, circular, square, squared with roundedcorners, triangular, elliptical, diamond-shaped, pentagonal, hexagonal,trapezoidal, or the like. For example, the base legs 101, 103 may have asquared cross-sectional shape and the rails 105, 107 and the posts 109,111 may be circular. The base legs 101, 103 may have similar sizedcross-sectional area to the posts 109, 111 and/or rails 105, 107, or maybe larger or smaller as desired. For example, the cross-sectional areaof the base legs 101, 103 may be about two to three times thecross-sectional area of the posts 109, 111. In another example, the baselegs 101, 103 may be about 3.8 cm by about 3.8 cm square incross-section and the posts 109, 111 and rails 105, 107 may be circularin cross-section, each having a diameter of about 2.5 cm.

It will be appreciated that any number of boots and base legs may beused for a safety rail 100. Although not shown, the safety rail 100 mayhave a single base leg, for example, that is disposed on the rail 107.In another example, the single base leg may be disposed between theposts 109, 111. A single boot may be used with the single base leg. Thesingle boot and single base leg configuration may be used for a safetyrail 100 that is less than about 90 cm in length, for example. Inanother example, the safety rail 100 may have three, four, five, or morebase legs and corresponding boots.

Although not shown, the body 140 may be formed of one piece. Forexample, the body 140 and the base legs 101, 103 may be a uniform pieceof metal, plastic, fiberglass, or the like, disposed directly on theboots 171, 173. In another example, the body 140 may be a uniform piececonnected to boots 171, 173 via the base legs 101, 103, respectively. Inanother example, the body 140 may be directly connected to the firstboot 171 and/or the second boot 173.

The first base leg 101 may be disposed on a first connector 177 of thefirst boot 171, and the second base leg 103 may be disposed on a secondconnector 179 of the second boot 173. In at least one embodiment, theconnectors 177, 179 may be sleeves and the base legs 101, 103 may fitinside the connectors 177, 179. In another embodiment, the base legs101, 103 may be hollow or have a hollow portion, and the connectors 177,179 may be posts, whereby the base legs 101, 103 generally fit over oraround the connectors 177, 179.

The base legs 101, 103 may be removably secured, respectively, to thefirst and second connectors 177, 179 of the boots 171, 173. In at leastone embodiment, one or more pins (two are shown 133, 135) may, at leastpartially, secure the base legs 101, 103 onto/into the connectors 177,179 of the boots 171, 173. For example, a first pin 133 may be at leastpartially disposed through aligned holes in the first base leg 101 andaligned holes in the first connector 177 of the first boot 171.Likewise, a second pin 135 may be at least partially disposed throughaligned holes in the second base leg 103 and aligned holes in the secondconnector 179 of the second boot 173.

One or more hooks or plates (four are shown 121, 123, 125, 127) havingfasteners, (e.g., screws, tabs, pins, or the like) may be fixed orsecured to the rails 105, 107 to allow one or more placards or signs(not shown) to be disposed on the safety rail 100. The placard (notshown), e.g., a warning sign, may be disposed between the base legs 101,103 and the first and second rails 105, 107, and joined to one or moreof the tabs 121, 123, 125, 127.

The safety rail 100 is generally adapted to connect with one or moreother safety rails 100 or another safety mechanism. For example, thesafety rail 100 may include one or more barrel hinges or sleeveconnectors (three are shown 113, 115, 117) adapted to receive acorresponding pin (not shown) therethrough. A first sleeve connector 113may be disposed on the first post 109, and a second sleeve connector 115and a third sleeve connector 117 may be disposed on the second post 111.The first sleeve connector 113 is generally adapted to fit between thesecond and third sleeve connectors 115, 117 of another adjacent safetyrail 100, known as a 2-1 mating system.

Although not shown, more sleeve connectors may be used. For example, thefirst post 109 and the second post 111 may have from a low of 1, 3, 5,or 7 to a high of 8, 12, 16, or 20 sleeve connectors. The sleeveconnectors 113, 115, 117 may vary in height. For example, the height ofthe sleeve connectors may range from a low of about 5 cm, about 5.5 cm,or about 6 cm to a high of about 6.5 cm, about 7 cm, or about 7.5 cm. Asthe number of sleeve connectors 113, 115, 117 increases, the height ofeach sleeve connector 113, 115, 117 may decrease or remain the same, asdesired.

The sleeve connectors 113, 115, 117 are generally hollow, i.e., havingan opening disposed therethrough, and may have differing cross-sectionalshapes or the same cross-sectional shapes, as desired. For example, thesleeve connectors 113, 115, 117 may be hollow cylinders having acircular cross-section. Other cross-sectional shapes may include, butare not limited too, square, squared with rounded corners, triangular,elliptical, diamond-shaped, pentagonal, hexagonal, trapezoidal, or thelike. For example, the sleeve connectors 113, 115, 117 may be pipeshaving a diameter ranging from about 2.5 cm to about 3.3 cm (e.g., 1″SCHD 40 pipe).

Once the sleeve connectors 113, 115, and/or 117 are aligned withconnectors (not shown) from adjoining safety rails 100 and/or otherobjects, a pin, dowel, or other fastener (not shown) may be locatedtherebetween. The fastener (not shown) generally has the same or similarcross-sectional shape as the sleeve connectors 113, 115, 117. Linkingthe safety rail 100 with other safety rails (not shown) and/or otherdevices may minimize gaps or the potential for gaps to form betweenthose safety rails and/or devices, thereby improving fall protection.

As illustrated, the connectors 113, 115, 117 may be aligned withconnectors (not shown) from adjoining safety rails 100 and/or otherobjects to receive an external dowel (not shown) therethrough. It willbe appreciated, however, that a connection mechanism for coupling two ormore safety rails 100 may instead include pins disposed on one post(e.g., on the first post 109) and corresponding barrel connectorsdisposed on the other post (e.g., on the second post 111) so that thesafety rails 100 are universally exchangeable and connectable in series.

The dimensions of the safety rail 100 may vary, as desired. For example,different sized or same sized safety rails 100 may be used together toform a modular safety rail system. The modular safety rail system mayinclude safety rails 100 of different dimensions and/or other devices toprovide adaptable fall protection for a variety of construction, workzone, and/or excavation sites. For example, the length of the safetyrail 100 may range from a low of about 60 cm, about 121 cm, about 183cm, about 244 cm, or about 305 cm to a high of about 366 cm, about 427cm, about 488 cm, about 549 cm, or about 600 cm. In another example, thelength of the safety rail 100 may be of from about 90 cm to about 579cm, about 152 cm to about 518 cm, about 213 cm to about 457 cm, or about274 cm to about 396 cm.

The same boots 171, 173 may be used for different sized safety rails100. For example, a 122 cm safety rail 100 may be replaced with a 183 cmsafety rail 100 by moving either of the boots 171, 173 over to match thespacing of the base legs 101, 103 of the replacement safety rail 100.

The distance between the base legs 101, 103 may range from a low ofabout 50 cm, about 70 cm, about 90 cm, or about 110 cm to a high ofabout 190 cm, about 210 cm, about 230 cm, or about 250 cm. For example,the distance between the base legs 101, 103 may be of from about 60 cmto about 240 cm, about 80 cm to about 220 cm, or about 100 cm to about200 cm. The base legs 101, 103 may be spaced apart in proportion to theoverall size of the safety rail 100, or spaced out of proportion, asdesired.

The distance between the base leg 101 and the first post 109 may rangefrom a low of about 25 cm, about 30 cm, about 35 cm, or about 40 cm toabout 55 cm, about 60 cm, about 65 cm, or about 70 cm. The distancebetween the base leg 103 and the second post 111 may be the same as thatbetween the base leg 101 and the first post 109, or it may be different,as desired.

The safety rail 100 may have a top edge height ranging from a low ofabout 100 cm, about 102 cm, about 104 cm, about 106 cm, or about 108 cmto a high of about 112 cm, about 114 cm, about 116 cm, about 118 cm, orabout 120 cm. The “top edge height,” as used herein, refers to theheight of a top edge of the highest rail (e.g., the height of the upperrail 107) with respect to a walking/working level (not shown) proximateto the safety rail 100. For example, the safety rail 100 may have a topedge height of from about 101 cm to about 119 cm, about 103 cm to about117 cm, about 105 cm to about 115 cm, or about 107 cm to about 113 cm.In at least one embodiment, the top edge height of the safety rail 100may be greater than 120 cm. For example, the top edge height of thesafety rail 100 may be increased for use with stilts, e.g., byincreasing the height of the safety rail 100 commensurate with theheight of the stilts.

The lower rail 105 and/or any other midrail (not shown) is generallydisposed at a height about midway between the top edge of the safetyrail 100 and the walking/working level. The term “midrail,” as usedherein refers to any substantially horizontal rail between a highestrail of the safety rail 100 and the walking/working level. For example,the lower rail 105 may have a height ranging from a low of about 40 cm,about 44 cm, about 48 cm, or about 52 cm to a high of about 58 cm, about62 cm, about 66 cm, or about 70 cm from the walking/working level.

The distance between the lower rail 105 and the upper rail 107 may varybetween different safety rails 100, or it may be uniform, as desired.For example, the distance between the lower rail 105 and the upper rail107 may range from a low of about 50 cm, about 52 cm, or about 54 cm toa high of about 56 cm, about 58 cm, or about 60 cm.

Although not shown, screens, mesh, intermediate vertical members, orequivalent intermediate structural members may also be installed betweenthe upper rail 107 and the walking/working level. Screens and/or mesh,when used, may extend from the upper rail 107 to the walking/workinglevel and along any opening between the base legs 101, 103 and/or theposts 109, 111. Although not shown, intermediate members (such asbalusters) may be disposed between the base legs 101, 103 and/or theposts 109, 111. Intermediate members, when used, may be less than about48 cm apart, less than about 42 cm apart, less than about 36 cm apart,or less than about 30 cm apart. Other structural members, e.g.,additional midrails and/or architectural panels, may be installed in thesafety rail 100 such that there are no openings in the safety rail 100that are more than 50 cm wide.

The safety rail 100 is generally capable of withstanding, withoutfailure, a force of about 890 N or more applied to the body 140 withinabout 5 cm of the upper rail 107, in any outward or downward direction.For example, the upper rail 107 may be capable of withstanding such aforce at any point along the upper rail 107. The upper rail 107generally limits and/or prevents deflection of the safety rail 100 to aheight of about 100 cm or more above the walking/working level. Thelower rail 105 and/or other midrails, in addition to any screens, mesh,intermediate vertical members, solid panels, and equivalent structuralmembers added to the safety rail 100, may be capable of withstanding,without failure, a force of about 666 N or more applied in any downwardor outward direction at any point along the lower rail 105 or othermember disposed in the safety rail 100. At least a portion of the safetyrail 100 may be surfaced to prevent injury to an employee from puncturesor lacerations and/or to prevent snagging of clothing.

The safety rail 100 may be of any sufficient durability, rigidity, andstrength so that the safety rail 100 meets or exceeds all requirementsestablished by the Occupational Safety and Health Administration(“OSHA”). The safety rail 100 may be strengthened by increasing thenumber and/or strength of the boots 171, 173 and/or the type andthickness of material used to make the boots 171, 173, rails 105, 107,the posts 109, 111, and/or the base legs 101, 103. The safety rail 100may also be composed of suitable materials to meet OSHA standards. Suchsuitable materials may include, but are not limited to, any of one ormore metals, fiberglass, wood, composite materials, and plastics, aswell as mixtures, blends, and/or copolymers of any and all of theforegoing materials.

In operation, the safety rail 100 is generally utilized at aconstruction site, work zone, excavation site, or the like, and may bedisposed on the exemplary structures discussed and described above. Forexample, the safety rail 100 may be disposed on protective systems inthe excavation itself. The safety rail 100 is generally designed so thatone or two people may lift the safety rail 100 and place it in position.Alternatively, the safety rail 100 may be positioned with liftingequipment and/or rigging, e.g., slings, chains, cables, or the like.

In at least one embodiment, the boots 171, 173 of the safety rail 100may first be disposed on an excavation support structure (e.g., a trenchshoring wall, a trench shield wall, an aluminum trench box wall, ashoring panel, a slide rail panel, combinations of the same, or thelike) or on other construction site structures (e.g., a beam, ledge,concrete slab, scaffolding, or the like). The boots 171, 173 may betightened and/or clamped on the excavation support structure and spacedto receive the base legs 101, 103 of the safety rail 100. Once the boots171, 173 are set and secured, the base legs 101, 103 may be slotted intoor onto the connectors 177, 179. The pins 133, 135 may then be disposedthrough the connectors 177, 179 and the base legs 101, 103 to preventthe base legs 101, 103 from dislodging from the boots 101, 103. In atleast one embodiment, the base legs 101, 103 may be secured to theconnectors 177, 179 before the safety rail 100 is disposed onto theexcavation support structure.

One or more of the safety rails 100 may be disposed adjacent one anotherat a construction or excavation site to enhance fall protection. In atleast one embodiment, one or more of the safety rails 100 may beconnected together in series to form a continuous length of fallprotection. For example, two safety rails 100 may be connected via oneor more of the sleeve connectors 113, 115, 117. In another example, aplurality of safety rails 100 may be connected together in series viatheir respective sleeve connectors 113, 115, 117. The safety rail 100may also be joined to another construction device or another structurevia the sleeve connectors 113, 115, 117.

The safety rail 100 may be removably disposed across access openings toconstruction and/or excavation sites, e.g., openings used duringhoisting operations, providing fall protection when the access openingsare not in use. The safety rail 100 may also be used in conjunction withother fall protection, e.g., covers, safety netting, harnesses,lifelines, access gates, or a combination thereof. For example, thesafety rail 100 may be disposed proximate and/or adjacent an accessgate, and may be connected to the access gate via the sleeve connectors113, 115, 117.

FIG. 2 depicts an isometric view of an illustrative boot 200 for asafety rail 100, according to one or more embodiments. The boot 200generally has a first or “stationary” member 204 and a second or“moveable” member 202 that face one another, where the moveable member202 moves relative to the stationary member 204. The stationary member204 generally resembles an upside down “L” shape and may be formed ofone piece or of multiple pieces secured together. For example, thestationary member 204 may be formed, at least partially, of one or moreupside down “L” shaped supports (two are shown 232, 234) joined by aconnector base 236, a first jaw 222, a first plate 210, and a secondplate 214. The first jaw 222 generally faces the moveable member 202,and the first plate 210 is generally disposed on or “under” the upsidedown “L” shaped supports 232, 234. The first plate 210 may be disposedsubstantially perpendicular to the first jaw 222. The second plate 214may be disposed on the opposite side of the upside down “L” shapedsupports 232, 234 from the first jaw 222 and may be substantiallyperpendicular to the connector base 236.

The moveable member 202 generally includes a second jaw or plate 220disposed on the side of the moveable member 202 that faces or opposesthe stationary member 204 and/or the first jaw 222. The second jaw 220may be flat or textured, e.g., grooved, as desired. The moveable member202 may also include a slider 206 that may be adapted to fit in thestationary member 204. For example, the slider 206 may slide in and outof the stationary member 204.

A void or opening (not shown) may be formed in the stationary member 204between the supports 232, 234, the connector base 236, the first plate210, an edge of the first jaw 222, and/or the second plate 214. Theslider 206 of the moveable member 202 may have a same or similarcross-sectional shape as the void formed in the stationary member 204and may be adapted to fit in the void between the connector base 236 andthe first jaw 222. For example, the void formed in the stationary member204 may have a square cross-section and the slider 206 may have a squareor substantially square cross-section, as shown, to limit or preventrotation of the moveable member 202. The slider 206 may be at leastpartially hollow and/or bored therethrough. The slider 206 may have afirst end disposed on and/or secured onto the second jaw 220 and anopening in a second end adapted to receive a first or “upper” tightener216 therethrough.

The first tightener 216 is generally disposed through the second plate214 of the stationary member 204 and may be disposed on or otherwiseconnected to the moveable member 202 through the opening in the secondend of the slider 206. For example, a shaft 226 of the first tightener216 may be disposed, at least partially, through an opening defined inthe second plate 214 of the stationary member 204 and threadably engagedwith an opening defined in the moveable member 202. In another example,the shaft 226 may be fixed to the moveable member 202 and threadablyengaged with the opening in the second plate 214 of the stationarymember 204.

The tightener 216 is generally adapted to draw the jaws 220, 222together and/or to push the jaws 220, 222 apart. For example, thetightener 216 may draw the jaws 220, 222 together when rotated in afirst direction, e.g., a clockwise turn, and may push the jaws 220, 222apart when rotated in a second direction, e.g., a counter-clockwiseturn. The slider 206 of the moveable member 202 is adapted to slide backand forth in the void formed in the stationary member 204 as the jaws220, 220 move together or apart.

A second or “lower” tightener 218 may also be disposed in the stationarymember 204 through the first jaw 222. The second tightener 218 may havea shaft 228 threadably engaged with an opening 230 in the first jaw 222.The opening 230 may be threaded or have a threaded nut disposedproximate thereto. The second tightener 218 may be adapted to rotate andthereby apply pressure to the structure on which the boot 200 may beplaced.

A connector 208 is generally disposed on the connector base 236 and maybe adapted to receive a base leg, e.g., base legs 101, 103 in FIG. 1, ofthe safety rail 100. The connector 208 may be shaped to have one of thebase legs 101, 103 disposed therethrough, and thereby rest on and/or besupported by the connector base 236. For example, if the base legs 101,103 have a square cross-section, the connector 208 may be a hollowed outrectangular prism with the connector base 236 forming its base and asquare cross-sectional opening opposite the connector base 236 adaptedto receive one of the base legs 101, 103. It will be appreciated,however, that the connector 208 may have other cross-sectional shapesthat correspond to the cross-sectional shapes of the base legs 101, 103.For example, the connector 208 may have a circular cross-section havinga slightly larger circumference than the circumference of base legs 101,103 having a circular cross-section. One or more gussets (two are shown212, 238) may be disposed between the connector base 236 and theconnector 208 for added structural support and increased weight bearing.The connector 208 may also include one or more holes (one is shown 224)therethrough that are adapted to receive a pin, e.g., pins 133, 135 inFIG. 1.

The connector 208 may be at least partially disposed over the firstplate 210. For example, the connector 208 may be centered over the firstplate 210 or may be offset. In another example, the connector 208 may becentered over an edge of a perpendicular wall, slat, and/or combinationthereof. The connector 208 may distribute the weight of a base leg(e.g., one of the base legs 101, 103) over at least a portion of thestructure to which the boot 200 is attached.

In operation, the moveable member 202 may cooperate with the stationarymember 204 to fix the boot 200 onto a base structure (e.g., the wall 150in FIG. 1) in a construction site, excavation site, work zone, or thelike. The moveable member 202 may be adjusted to extend from thestationary member 204 and fit on or over the base structure. Forexample, the first tightener 216 may be loosened to move the second jaw220 of the moveable member 202 away from the first jaw 222 of thestationary member 204. Once the jaws 220, 222 have been moved apart, thefirst plate 210 of the stationary member 204 may be placed onto the topof the base structure. By actuating the first tightener 216 (e.g., byrotating the tightener 216), the slider 206 of the moveable member 202is generally drawn into the void formed in the stationary member 204,and the second jaw 220 of the moveable member 202 moves towards thefirst jaw 222 of the stationary member 204. When the slider 206 and thehousing 214 are substantially square shaped, e.g., square with roundededges, rotation of the slider 206 and the rest of the moveable member202 may be limited as it is drawn towards the stationary member 204.

The first tightener 216 may be rotated until the second jaw 220 engagesa first side of the base structure on which the boot 200 is placed andthe first jaw 222 of the stationary member 204 engages a second side ofthe base structure. The first tightener 216 may be rotated further toclamp the boot 200 securely onto the base structure. Once the firsttightener 216 has been tightened, the second tightener 218 may berotated, e.g., by hand, to force the shaft 228 of the second tightener218 towards the base structure to apply pressure thereon. When both thefirst and second tighteners 216, 218 are completely tightened, the boot200 may fit snugly and precisely onto the base structure to provide asafe and tight fit for the boot 200 and the safety rail 100.

As discussed and described above, the boot 200 may be adapted to attachto shield and shoring equipment and/or other construction equipment orstructures, including varying wall thicknesses required to meet safetystandards for an excavation or construction site. The boot 200 isgenerally adjustable so that the same boot 200 may be used for varyingwall and/or structure thicknesses. For example, the boot 200 may beadjusted to clamp onto walls and/or structures ranging from a low ofabout 2 cm, about 4 cm, about 6 cm, or about 8 cm to a high of about 24cm, about 26 cm, about 28 cm, or about 30 cm.

FIG. 3 depicts a side view of a connection between two safety rails 100,300, according to one or more embodiments. In at least one embodiment,the first sleeve connector 113 of the safety rail 100 is generallyaligned with a second sleeve connector 315 and a third sleeve connector317 of the second safety rail 300, and a pin, fastener, or dowel 370 isgenerally disposed through the aligned sleeve connectors 113, 315, 317to secure the first safety rail 100 to the second safety rail 300.

The dowel 370 may be solid, having one end slightly tapered and/orrounded to facilitate travel through the sleeve connectors 113, 315,317. The dowel 370 may have a width sufficient to fit into an openingdisposed through the sleeve connectors 113, 115, 117. For example, thedowel 370 may have a width of about 1.75 to about 2 cm. The tapered endof the dowel 370 may have hole 372 bored therethrough to receive a pinor tie (not shown) that may limit and/or prevent the dowel 370 frombeing dislodged from the sleeve connectors 113, 315, 317. Although notshown, a bolt, nail, screw, or the like, may be used instead of thedowel 370.

A cap 371 may be disposed at an end of the dowel 370 opposite thetapered end to prevent the dowel 370 from falling through the openingsin the sleeve connectors 113, 315, 317. The cap 371 may have a circularor square cross-section and may have a width the same as the width ofthe dowel (i.e., from about 1.75 to about 2 cm) in one direction and alength of about 2 cm to about 4 cm, e.g., a length and/or widthsufficient to grip by hand. Although not shown, a cord or chain may bedisposed on and/or secured to the cap 371. For example, a 30 cm longchain having 0.5 cm chain lengths may be disposed on the cap 371. Thecord or chain disposed on the cap 370 may aid removal of the dowel 370from the sleeve connectors 113, 315, 317 and/or may be tightened aroundthe posts 109, 311 as an extra safety measure.

The dowel 370 may vary in length to fit through at least one connector,e.g., connector 113, of the safety rail 100 and at least one connector,e.g., connector 315 and/or 317 of the second safety rail 300. Forexample, the length of the dowel 370 may range from a low of about 20cm, about 25 cm, about 30 cm, or about 35 cm to a high of about 45 cm,about 50 cm, about 55 cm, or about 60 cm.

The dowel 370 and the opening of the sleeve connectors 113, 315, 317 mayhave the same or similar cross-sectional shape. For example, the sleeveconnectors 113, 315, 317 may be hollowed out cylinders and the dowel 370may be a solid cylinder, where the circumference of the dowel 370 isslightly less than that of the sleeve connectors 113, 315, 317. When thedowel 370 is cylindrical, the circumference may range, for example, froma low of about 1 cm, about 1.5 cm, or about 2 cm to a high of about 2.5cm, about 3 cm, or about 3.5 cm. Although not shown, the sleeveconnectors 113, 315, 317 and the dowel 370 may have a variety ofcross-sectional shapes including, but not limited to, square, squaredwith rounded corners, triangular, elliptical, diamond-shaped,pentagonal, hexagonal, trapezoidal, or the like.

In operation, the two safety rails 100, 300 may be disposed on a basestructure at a construction or excavation site, so that the first sleeveconnector 113 on the first post 109 of the first safety rail 100 may bepositioned between the second sleeve connector 315 and the third sleeveconnector 317 on the post 311 of the second safety rail 300. The safetyrails 100, 300 may be further adjusted so that the sleeve connectors113, 315, 317 and the opening formed therethrough are in substantialalignment. The boots (e.g., boot 200 described in FIG. 2) of the safetyrails 100, 300 may then be tightened to secure the safety rails 100, 300to the base structure.

Either before or after the boots are tightened, the tapered end of thedowel 370 may be inserted in the second sleeve connector 315 of thesecond safety rail 300 and then through the first connector 113 andthird sleeve connector 317, until the cap 371 rests on the second sleeveconnector 315. The dowel 370 may act as a pivot point between the safetyrails 100, 300 allowing the safety rails 100, 300 to be used at aplurality of directions. For example, four safety rails (not shown) maybe connected in a square or rectangle to provide fall protection forsquare or rectangular excavations.

If a chain or chord is attached to the cap 371, it may be wrapped atleast partially around the posts 109, 311 of the safety rails 100, 300to further secure the posts 109, 311 together. To disconnect the safetyrails 100, 300, the dowel 370 may be removed and the boots loosened sothat the two safety rails 100, 300 may slide apart.

Although not shown, it will be appreciated that the same method ofconnecting and disconnecting the safety rails 100, 300 may be used forthe other side of the safety rails 100, 300. In this way, a plurality ofsafety rails 100 or 300 may be interconnected together to provide fallprotection for both uniform and non-uniform structures. This connectionsystem allows the safety rails 100, 300 to be quickly disposed on astructure and connected together, thereby providing adaptable fallprotection for both large and small construction sites, work zones,excavation sites, or the like.

Embodiments of the present disclosure further relate to any one or moreof the following paragraphs:

1. A safety rail, comprising a body disposed on first and secondadjustable boots adapted to secure the safety rail to an excavationsupport structure, the body comprising a lower rail connected to thefirst and second adjustable boots.

2. The safety rail of paragraph 1, further comprising: a first base legconnecting the first adjustable boot to the lower rail; and a secondbase leg connecting the second adjustable boot to the lower rail,wherein the first and second base legs are disposed between ends of thebody.

3. The safety rail of paragraph 2, wherein the first adjustable boot andthe second adjustable boot each comprise a first tightener disposedthrough a first member and connected to a second member, the firsttightener being adapted to draw the second member toward the firstmember when actuated.

4. The safety rail of paragraph 3, wherein the first member comprises aconnector base and a first jaw both disposed on a one or more supports;wherein the second member comprises a slider and a second jaw, theslider being adapted to fit into the first member between the connectorbase and the first jaw; and wherein the first tightener is adapted todraw the second jaw toward the first jaw when rotated in a firstdirection and to push the second jaw away from the first jaw whenrotated in a second direction.

5. The safety rail of paragraph 4, wherein the first member furthercomprises: a connector disposed on the connector base and adapted toreceive one of the first and second base legs; a first plate disposed onthe one or more supports proximate the first jaw and opposing theconnector base; and a second plate disposed on an opposite side of theone or more supports from the first jaw.

6. The safety rail of paragraph 5, wherein the first tightener isdisposed through the second plate of the first member, and wherein theslider is adapted to move back and forth in an opening formed in thefirst member between the connector base, the one or more supports, andthe first plate.

7. The safety rail according to any one of paragraphs 4 to 6, whereineach of the first and second adjustable boots further comprises a secondtightener disposed through the first jaw.

8. The safety rail according to any one of paragraphs 1 to 7, whereinthe body is capable of withstanding, without failure, a force of about890 N or more applied to an upper rail of the body.

9. The safety rail according to any one of paragraphs 1 to 8, whereinthe lower rail is capable of withstanding, without failure, a force ofabout 666 N or more applied in any downward or outward direction at anypoint thereon.

10. A safety rail for an excavated area, comprising a body having anupper rail and a lower rail, wherein the upper and lower rails areconnected to a first adjustable boot via a first base leg, and whereinthe first adjustable boot is adapted to secure the safety rail to anexcavation support structure.

11. The safety rail of paragraph 10, wherein the first base leg ispositioned between a first side and a second side of the body.

12. The safety rail of paragraph 10 or 11, further comprising a secondbase leg connecting a second adjustable boot to the upper and lowerrails.

13. The safety rail of paragraph 12, wherein the first base leg isremovably secured to the first adjustable boot and the second base legis removably secured to the second adjustable boot.

14. The safety rail of paragraph 12 or 13, wherein the body furthercomprises a first post and a second post disposed between the upper andlower rails.

15. The safety rail of paragraph 14, further comprising a first sleeveconnector disposed on the first post and a second sleeve connectordisposed on the second post, wherein each sleeve connector is adapted tobe fastened to another sleeve connector via a fastener disposedtherethrough.

16. A method for protecting an excavation area, comprising: disposing afirst adjustable boot and a second adjustable boot of a first safetyrail onto an excavation support structure, the first safety railcomprising a body having a lower rail connected to the first and secondadjustable boots; and securing the first and second adjustable boots tothe excavation support structure.

17. The method of paragraph 16, wherein the first safety rail furthercomprises a first base leg and a second base leg, and wherein the methodfurther comprises removably securing the first base leg to a firstconnector of the first adjustable boot and removably securing the secondbase leg to a second connector of the second adjustable boot before thefirst and second adjustable boots are secured to the excavation supportstructure.

18. The method of paragraph 16 or 17, wherein securing the first andsecond adjustable boots to the excavation support structure comprises:rotating a first tightener of the first adjustable boot to secure thefirst adjustable boot to the excavation support structure; and

19. The method of paragraph 18, wherein rotating the first tightener ofeach adjustable boot draws a first jaw of each adjustable boot toward asecond jaw of each adjustable boot until the first and second jaws ofeach adjustable boot are clamped to the excavation support structure.

20. The method according to any one of paragraphs 16 to 19, furthercomprising: securing a second safety rail on the excavation supportstructure proximate the first safety rail; aligning sleeve connectorsdisposed on adjoining ends of the first and second safety rails; andinserting a fastener through the aligned sleeve connectors to connectthe first safety rail to the second safety rail.

The foregoing has outlined features of several embodiments so that thoseskilled in the art may better understand the present disclosure. Thoseskilled in the art should appreciate that they may readily use thepresent disclosure as a basis for designing or modifying other processesand structures for carrying out the same purposes and/or achieving thesame advantages of the embodiments introduced herein. Those skilled inthe art should also realize that such equivalent constructions do notdepart from the spirit and scope of the present disclosure, and thatthey may make various changes, substitutions, and alterations hereinwithout departing from the spirit and scope of the present disclosure.

What is claimed is:
 1. A safety rail for an excavation supportstructure, comprising: an upper rail spaced apart from a lower rail; agenerally vertical support post positioned between the upper and lowerrails; and an adjustable boot disposed on one end of the support post,the adjustable boot configured to clamp onto an excavation supportstructure having a first side surface, a second side surface, and a topsurface, wherein the adjustable boot comprises: a first member connectedto the support post, wherein the first member is L-shaped having agenerally horizontal portion and a generally vertical portion, thegenerally horizontal portion is configured to sit above the top surfaceof the excavation structure and configured to rest thereon, a secondmember configured to rest against a second side surface of theexcavation support structure, wherein the second member moves relativeto the first member, and wherein the first side surface and the secondside surface of the excavation support structure are opposite oneanother, wherein the second member is also L-shaped having a generallyhorizontal portion and a generally vertical portion, the generallyhorizontal portion of the second member configured to sit above the topsurface of the excavation structure, wherein the generally horizontalportion of the second member and the generally horizontal portion of thefirst member are configured to at least partially overlap one another toallow the second member to move relative to the first member, andwherein the generally horizontal portions of the first member and thesecond member each comprise an aperture formed there through.
 2. Thesafety rail of claim 1, wherein the first member is made of one tubularportion or multiple tubular portions.
 3. The safety rail of claim 1,wherein the generally horizontal portion of the second member isconfigured to move back and forth within the generally horizontalportion of the first member to adjust the spacing between the respectivevertical portions of the second member and the first member.
 4. Thesafety rail of claim 1, wherein the adjustable boot further comprises areceptacle disposed on the generally horizontal portion of the firstmember and extending upwardly therefrom, the receptacle being adapted toreceive and hold the one end of the support post.
 5. The safety rail ofclaim 1, wherein the adjustable boot further comprises a generallyhorizontal support plate mounted on an upper surface of the generallyhorizontal portion of the first member, wherein the receptacle isdisposed on top of the generally horizontal support plate.
 6. The safetyrail of claim 1, wherein the first member further comprises a generallyhorizontal support plate that is mounted to an underside of thegenerally horizontal portion of the first member, and that is adapted todirectly engage and rest on the top surface of the support structure. 7.A safety rail for an excavation support structure, comprising: an upperrail spaced apart from a lower rail; a generally vertical support postpositioned between the upper and lower rails; and an adjustable bootdisposed on one end of the support post, the adjustable boot configuredto clamp onto an excavation support structure having a first sidesurface, a second side surface, and a top surface, wherein theadjustable boot comprises: a first member connected to the support post,wherein the first member is L-shaped having a generally horizontalportion and a generally vertical portion, the generally horizontalportion is configured to sit above the top surface of the excavationsupport structure and rest thereon; a second member that moves relativeto the first member, and configured to rest against a second sidesurface of the excavation support structure, wherein the first sidesurface and the second side surface of the excavation support structureare opposite one another, wherein the second member is also L-shapedhaving a generally horizontal portion and a generally vertical portion,the generally horizontal portion of the second member configured to sitabove the top surface of the excavation support structure, and whereinthe generally horizontal portion of the second member and the generallyhorizontal portion of the first member are configured to at leastpartially overlap one another to allow the second member to moverelative to the first member; and a tightener configured to engage theexcavation support structure, wherein the tightener is disposed throughthe generally vertical portion of the first member.
 8. The safety railof claim 7, wherein the first member is made of one tubular portion ormultiple tubular portions.
 9. The safety rail of claim 7, wherein thegenerally horizontal portion of the second member is configured to moveback and forth within the generally horizontal portion of the firstmember to adjust the spacing between the respective vertical portions ofthe second member and the first member.
 10. The safety rail of claim 7,wherein the adjustable boot further comprises a receptacle disposed onthe generally horizontal portion of the first member and extendingupwardly therefrom, the receptacle being adapted to receive and hold theone end of the support post.
 11. The safety rail of claim 7, wherein theadjustable boot further comprises a generally horizontal support platemounted on an upper surface of the generally horizontal portion of thefirst member, wherein the receptacle is disposed on top of the generallyhorizontal support plate.
 12. The safety rail of claim 7, wherein thefirst member further comprises a generally horizontal support plate thatis mounted to an underside of the generally horizontal portion of thefirst member, and that is adapted to directly engage and rest on the topsurface of the support structure.
 13. The safety rail of claim 7,wherein the generally horizontal portions of the first member and thesecond member each comprise an aperture formed there through.
 14. Asafety rail for an excavation support structure, comprising: an upperrail; a lower rail that is generally parallel to the upper rail; a firstgenerally vertical support post adjacent a first end of the upper andlower rails; a second generally vertical support post adjacent a secondend of the upper and lower rails, wherein the first and second supportposts are generally parallel to one another, an adjustable boot disposedon a lower end of each support post, the adjustable boot configured toclamp onto an excavation support structure having a first side surface,a second side surface, and a top surface, wherein each adjustable bootcomprises: a first member connected to the support post, wherein thefirst member is L-shaped having a generally horizontal portion and agenerally vertical portion, the generally horizontal portion isconfigured to sit above the top surface of the excavation supportstructure and rest thereon; a second member that moves relative to thefirst member, and configured to rest against a second side surface ofthe excavation support structure, wherein the first side surface and thesecond side surface of the excavation support structure are opposite oneanother, wherein the second member is also L-shaped having a generallyhorizontal portion and a generally vertical portion, the generallyhorizontal portion of the second member configured to sit above the topsurface of the excavation support structure, and wherein the generallyhorizontal portion of the second member and the generally horizontalportion of the first member are configured to at least partially overlapone another to allow the second member to move relative to the firstmember; and a tightener configured to engage the excavation supportstructure, wherein the tightener is disposed through the generallyvertical portion of the first member.
 15. The safety rail of claim 14,wherein the first member is made of one tubular portion or multipletubular portions.
 16. The safety rail of claim 14, wherein the generallyhorizontal portion of the second member is configured to move back andforth within the generally horizontal portion of the first member toadjust the spacing between the respective vertical portions of thesecond member and the first member.
 17. The safety rail of claim 14,wherein the adjustable boot further comprises a receptacle disposed onthe generally horizontal portion of the first member and extendingupwardly therefrom, the receptacle being adapted to receive and hold theone end of the support post.
 18. The safety rail of claim 14, whereinthe adjustable boot further comprises a generally horizontal supportplate mounted on an upper surface of the generally horizontal portion ofthe first member, wherein the receptacle is disposed on top of thegenerally horizontal support plate.
 19. The safety rail of claim 14,wherein the first member further comprises a generally horizontalsupport plate that is mounted to an underside of the generallyhorizontal portion of the first member, and that is adapted to directlyengage and rest on the top surface of the support structure.
 20. Thesafety rail of claim 14, wherein the generally horizontal portions ofthe first member and the second member each comprise an aperture formedthere through.